Subaru/SCExAO First-light Direct Imaging of a Young Debris Disk around HD 36546

Thayne Currie; Olivier Guyon; Motohide Tamura; Tomoyuki Kudo; Nemanja Jovanovic; Julien Lozi; Joshua E. Schlieder; Timothy D. Brandt; Jonas Kuhn; Eugene Serabyn; Markus Janson; Joseph Carson; Tyler Groff; N. Jeremy Kasdin; Michael W. McElwain; Garima Singh; Taichi Uyama; Masayuki Kuzuhara; Eiji Akiyama; Carol Grady; Saeko Hayashi; Gillian Knapp; Jung Mi Kwon; Daehyeon Oh; John Wisniewski; Michael Sitko; Yi Yang

doi:10.3847/2041-8213/836/1/L15

Subaru/SCExAO First-light Direct Imaging of a Young Debris Disk around HD 36546

Thayne Currie, Olivier Guyon, Motohide Tamura, Tomoyuki Kudo, Nemanja Jovanovic, Julien Lozi, Joshua E. Schlieder, Timothy D. Brandt, Jonas Kuhn, Eugene Serabyn, Markus Janson, Joseph Carson, Tyler Groff, N. Jeremy Kasdin, Michael W. McElwain, Garima Singh, Taichi Uyama, Masayuki Kuzuhara, Eiji Akiyama, Carol GradySaeko Hayashi, Gillian Knapp, Jung Mi Kwon, Daehyeon Oh, John Wisniewski, Michael Sitko, Yi Yang

Optical Sciences

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32 Scopus citations

Abstract

We present H-band scattered light imaging of a bright debris disk around the A0 star HD 36546 obtained from the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) system with data recorded by the HiCIAO camera using the vector vortex coronagraph. SCExAO traces the disk from r ∼ 0.″3 to r ∼ 1″ (34-114 au). The disk is oriented in a near east-west direction (PA ∼ 75°), is inclined by i ∼ 70°-75°, and is strongly forward-scattering (g > 0.5). It is an extended disk rather than a sharp ring; a second, diffuse dust population extends from the disk's eastern side. While HD 36546 intrinsic properties are consistent with a wide age range (t ∼ 1-250 Myr), its kinematics and analysis of coeval stars suggest a young age (3-10 Myr) and a possible connection to Taurus-Auriga's star formation history. SCExAO's planet-to-star contrast ratios are comparable to the first-light Gemini Planet Imager contrasts; for an age of 10 Myr, we rule out planets with masses comparable to HR 8799 b beyond a projected separation of 23 au. A massive icy planetesimal disk or an unseen super-Jovian planet at r > 20 au may explain the disk's visibility. The HD 36546 debris disk may be the youngest debris disk yet imaged, is the first newly identified object from the now-operational SCExAO extreme AO system, is ideally suited for spectroscopic follow-up with SCExAO/CHARIS in 2017, and may be a key probe of icy planet formation and planet-disk interactions.

Original language	English (US)
Article number	L15
Journal	Astrophysical Journal Letters
Volume	836
Issue number	1
DOIs	https://doi.org/10.3847/2041-8213/836/1/L15
State	Published - Feb 10 2017

Keywords

planetary systems
stars: individual (HD 36546)
stars: solar-type

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/2041-8213/836/1/L15

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Currie, T., Guyon, O., Tamura, M., Kudo, T., Jovanovic, N., Lozi, J., Schlieder, J. E., Brandt, T. D., Kuhn, J., Serabyn, E., Janson, M., Carson, J., Groff, T., Kasdin, N. J., McElwain, M. W., Singh, G., Uyama, T., Kuzuhara, M., Akiyama, E., ... Yang, Y. (2017). Subaru/SCExAO First-light Direct Imaging of a Young Debris Disk around HD 36546. Astrophysical Journal Letters, 836(1), Article L15. https://doi.org/10.3847/2041-8213/836/1/L15

Currie, T, Guyon, O, Tamura, M, Kudo, T, Jovanovic, N, Lozi, J, Schlieder, JE, Brandt, TD, Kuhn, J, Serabyn, E, Janson, M, Carson, J, Groff, T, Kasdin, NJ, McElwain, MW, Singh, G, Uyama, T, Kuzuhara, M, Akiyama, E, Grady, C, Hayashi, S, Knapp, G, Kwon, JM, Oh, D, Wisniewski, J, Sitko, M & Yang, Y 2017, 'Subaru/SCExAO First-light Direct Imaging of a Young Debris Disk around HD 36546', Astrophysical Journal Letters, vol. 836, no. 1, L15. https://doi.org/10.3847/2041-8213/836/1/L15

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title = "Subaru/SCExAO First-light Direct Imaging of a Young Debris Disk around HD 36546",

abstract = "We present H-band scattered light imaging of a bright debris disk around the A0 star HD 36546 obtained from the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) system with data recorded by the HiCIAO camera using the vector vortex coronagraph. SCExAO traces the disk from r ∼ 0.″3 to r ∼ 1″ (34-114 au). The disk is oriented in a near east-west direction (PA ∼ 75°), is inclined by i ∼ 70°-75°, and is strongly forward-scattering (g > 0.5). It is an extended disk rather than a sharp ring; a second, diffuse dust population extends from the disk's eastern side. While HD 36546 intrinsic properties are consistent with a wide age range (t ∼ 1-250 Myr), its kinematics and analysis of coeval stars suggest a young age (3-10 Myr) and a possible connection to Taurus-Auriga's star formation history. SCExAO's planet-to-star contrast ratios are comparable to the first-light Gemini Planet Imager contrasts; for an age of 10 Myr, we rule out planets with masses comparable to HR 8799 b beyond a projected separation of 23 au. A massive icy planetesimal disk or an unseen super-Jovian planet at r > 20 au may explain the disk's visibility. The HD 36546 debris disk may be the youngest debris disk yet imaged, is the first newly identified object from the now-operational SCExAO extreme AO system, is ideally suited for spectroscopic follow-up with SCExAO/CHARIS in 2017, and may be a key probe of icy planet formation and planet-disk interactions.",

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author = "Thayne Currie and Olivier Guyon and Motohide Tamura and Tomoyuki Kudo and Nemanja Jovanovic and Julien Lozi and Schlieder, {Joshua E.} and Brandt, {Timothy D.} and Jonas Kuhn and Eugene Serabyn and Markus Janson and Joseph Carson and Tyler Groff and Kasdin, {N. Jeremy} and McElwain, {Michael W.} and Garima Singh and Taichi Uyama and Masayuki Kuzuhara and Eiji Akiyama and Carol Grady and Saeko Hayashi and Gillian Knapp and Kwon, {Jung Mi} and Daehyeon Oh and John Wisniewski and Michael Sitko and Yi Yang",

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T1 - Subaru/SCExAO First-light Direct Imaging of a Young Debris Disk around HD 36546

AU - Currie, Thayne

AU - Guyon, Olivier

AU - Tamura, Motohide

AU - Kudo, Tomoyuki

AU - Jovanovic, Nemanja

AU - Lozi, Julien

AU - Schlieder, Joshua E.

AU - Brandt, Timothy D.

AU - Kuhn, Jonas

AU - Serabyn, Eugene

AU - Janson, Markus

AU - Carson, Joseph

AU - Groff, Tyler

AU - Kasdin, N. Jeremy

AU - McElwain, Michael W.

AU - Singh, Garima

AU - Uyama, Taichi

AU - Kuzuhara, Masayuki

AU - Akiyama, Eiji

AU - Grady, Carol

AU - Hayashi, Saeko

AU - Knapp, Gillian

AU - Kwon, Jung Mi

AU - Oh, Daehyeon

AU - Wisniewski, John

AU - Sitko, Michael

AU - Yang, Yi

PY - 2017/2/10

Y1 - 2017/2/10

N2 - We present H-band scattered light imaging of a bright debris disk around the A0 star HD 36546 obtained from the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) system with data recorded by the HiCIAO camera using the vector vortex coronagraph. SCExAO traces the disk from r ∼ 0.″3 to r ∼ 1″ (34-114 au). The disk is oriented in a near east-west direction (PA ∼ 75°), is inclined by i ∼ 70°-75°, and is strongly forward-scattering (g > 0.5). It is an extended disk rather than a sharp ring; a second, diffuse dust population extends from the disk's eastern side. While HD 36546 intrinsic properties are consistent with a wide age range (t ∼ 1-250 Myr), its kinematics and analysis of coeval stars suggest a young age (3-10 Myr) and a possible connection to Taurus-Auriga's star formation history. SCExAO's planet-to-star contrast ratios are comparable to the first-light Gemini Planet Imager contrasts; for an age of 10 Myr, we rule out planets with masses comparable to HR 8799 b beyond a projected separation of 23 au. A massive icy planetesimal disk or an unseen super-Jovian planet at r > 20 au may explain the disk's visibility. The HD 36546 debris disk may be the youngest debris disk yet imaged, is the first newly identified object from the now-operational SCExAO extreme AO system, is ideally suited for spectroscopic follow-up with SCExAO/CHARIS in 2017, and may be a key probe of icy planet formation and planet-disk interactions.

AB - We present H-band scattered light imaging of a bright debris disk around the A0 star HD 36546 obtained from the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) system with data recorded by the HiCIAO camera using the vector vortex coronagraph. SCExAO traces the disk from r ∼ 0.″3 to r ∼ 1″ (34-114 au). The disk is oriented in a near east-west direction (PA ∼ 75°), is inclined by i ∼ 70°-75°, and is strongly forward-scattering (g > 0.5). It is an extended disk rather than a sharp ring; a second, diffuse dust population extends from the disk's eastern side. While HD 36546 intrinsic properties are consistent with a wide age range (t ∼ 1-250 Myr), its kinematics and analysis of coeval stars suggest a young age (3-10 Myr) and a possible connection to Taurus-Auriga's star formation history. SCExAO's planet-to-star contrast ratios are comparable to the first-light Gemini Planet Imager contrasts; for an age of 10 Myr, we rule out planets with masses comparable to HR 8799 b beyond a projected separation of 23 au. A massive icy planetesimal disk or an unseen super-Jovian planet at r > 20 au may explain the disk's visibility. The HD 36546 debris disk may be the youngest debris disk yet imaged, is the first newly identified object from the now-operational SCExAO extreme AO system, is ideally suited for spectroscopic follow-up with SCExAO/CHARIS in 2017, and may be a key probe of icy planet formation and planet-disk interactions.

KW - planetary systems

KW - stars: individual (HD 36546)

KW - stars: solar-type

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Subaru/SCExAO First-light Direct Imaging of a Young Debris Disk around HD 36546

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